There were several significant events that occurred in the cryptocurrency space in 2021. Here are a few examples:

Increased institutional interest: 2021 saw a significant increase in institutional interest in cryptocurrencies, with a number of large financial institutions and asset managers announcing plans to invest in or offer services related to cryptocurrencies. This trend was driven in part by the growing recognition of cryptocurrencies as a legitimate asset class, as well as by the increasing adoption of cryptocurrencies by retail investors.

Launch of major new projects: 2021 saw the launch of several major new cryptocurrency projects, including the launch of the Ethereum 2.0 mainnet, which marked a major milestone in the development of the Ethereum blockchain. Other notable launches included the launch of the Binance Smart Chain, a high-performance blockchain platform developed by the cryptocurrency exchange Binance, and the launch of the Polygon mainnet, a decentralized platform that is designed to support a wide range of decentralized applications.

Regulatory developments: 2021 saw a number of regulatory developments related to cryptocurrencies, with governments and regulatory bodies around the world issuing guidelines or taking action to regulate the cryptocurrency space. These developments included the release of new guidelines by the Financial Action Task Force (FATF), an international organization that sets standards for combating money laundering and terrorism financing, and the launch of the Cryptocurrency Act of 2020, a bill introduced in the United States that would provide a framework for regulating cryptocurrencies at the federal level.

Overall, 2021 was a significant year for the cryptocurrency space, with a number of important events and developments that have shaped the direction of the industry.